CN1255665A - Touching switch and method for mfg. electrified layer - Google Patents
Touching switch and method for mfg. electrified layer Download PDFInfo
- Publication number
- CN1255665A CN1255665A CN99122427A CN99122427A CN1255665A CN 1255665 A CN1255665 A CN 1255665A CN 99122427 A CN99122427 A CN 99122427A CN 99122427 A CN99122427 A CN 99122427A CN 1255665 A CN1255665 A CN 1255665A
- Authority
- CN
- China
- Prior art keywords
- charged layer
- layer
- dielectric substance
- montage
- charged
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
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- Push-Button Switches (AREA)
- Manufacture Of Switches (AREA)
Abstract
A touch switch in accordance with the present invention prevents a static electricity change from being transferred between an electric device incorporating the touch switch and a user of the device, thereby improving convenience and safety. The touch switch incorporates a dielectric layer to be touched by the user, and an electrically conductive layer on a side of the dielectric layer not touched by the user. A touch switch embodying the invention may include a protective layer formed over the electrically conductive layer to prevent oxidation of the electrically conductive layer. A touch switch embodying the invention may also include a conductive member connecting the electrically conductive layer of the touch member to a circuit of an associated circuit board.
Description
The present invention relates to soft-touch control in the indirect touch method of electric product or electronic product and the method for making its charged layer, be particularly related to the method for a kind of soft-touch control and its charged layer of manufacturing, form the method for charged layer on the ferroelectric material surface such as glass, mica, epoxy resin and use the soft-touch control of these charged layer to improve convenience and security by being provided at.
Below, describe conventional soft-touch control in detail with reference to accompanying drawing.
Fig. 1 is a part sectioned view of showing conventional soft-touch control.
As shown in the figure, conventional soft-touch control comprises the control knob 10 that is coated with plated film, push the function key of this control knob with operation electric product or electronic product, one end thereof is fixed in the inside of housing 11 with screw 12, the outside of housing 11 is then exposed in its another end, constitutes touch unit 12a.
Inside at the touch unit 12a of control knob 10 forms chase unit 12b.Electroconductive resin 14 is set, and its underpart is among the chase unit 12b.The top that pin 13 inserts electroconductive resin 14.
In addition, on the top of control knob 10 printed circuit board (PCB) 15 is set.Wherein, pin 13 upper surface that passes printed circuit board (PCB) 15 exposes.
Below, the operation of the soft-touch control of interpretation routine.
When the user was arranged on the touch unit 12a of the control knob 10 on the housing 11 for the function key of operating electric product or electronic product with its finger 20 touches, the weak current that flows through user's body sent electroconductive resin 14 to by the control knob of being electroplated 10.
The weak current that sends electroconductive resin 14 to produces electrification phenomenon 16 between pin and copper sheet 17, wherein pin is assemblied in the printed circuit board (PCB) 15 highlightedly, and copper sheet 17 and pin 13 are spaced a predetermined distance from and be arranged at the upper surface of printed circuit board (PCB) 15.
According to electrification phenomenon, weak current is transmitted to microcomputer 18, thus functional key.
But the shortcoming of conventional soft-touch control is, can accumulate the static that is produced by electric product or electronic product on control knob, when the user touches the touch unit of control knob, and can be by user's health discharge, so cause electric shock.On the contrary, the static that accumulates on user's body can send microcomputer at once by printed circuit board (PCB), thereby causes the fault of electric product or electronic product.
In addition, the control knob of being electroplated is used as medium, and the weak current that will flow through user's body sends electroconductive resin to, thereby causes environmental pollution.
Therefore, the object of the present invention is to provide the method for soft-touch control and its charged layer of manufacturing, in order to strengthen the electrical phenomena that rises of electronics, on the surface of the ferroelectric material such as glass, mica, epoxy resin, form charged layer, by method that forms this charged layer and the soft-touch control that uses these charged layer are provided, can improve convenience and security.
In order to realize above-mentioned purpose of the present invention, a kind of method of making charged layer is provided, this method comprises the following steps: by coating emulsion fluid on the surface of net and dry, montage (editing) film, this film is adhered on the surface of emulsion fluid, use ultraviolet exposure, form montage plate (editing plate) thus; The montage plate is placed on the surface of glass plate, the potpourri of printed silver powder and ceramic powders is removed the montage plate then; With the glass plate that is printed with potpourri by heating, and carry out the air cooling down operation thereon, form charged layer.
A kind of soft-touch control device also is provided, and this device comprises: be fixed on the printed circuit board (PCB) in the housing; By the touch parts that dielectric substance is formed, the one side partly is coated with the charged layer that charged materials is formed; And conductive component, be used to connect part and the printed circuit board (PCB) that the touch parts are coated with charged layer.
The accompanying drawing that is not construed as limiting the invention with reference to only being used to show will be more readily understood the present invention, wherein:
Fig. 1 is a part sectioned view of showing conventional soft-touch control;
Fig. 2 is a part sectioned view of showing the soft-touch control of the preferred embodiment of the present invention; With
Fig. 3 A to Fig. 3 D is the figure of sequential steps of the manufacturing soft-touch control charged layer method of the explanation embodiment of the invention, wherein:
Fig. 3 A represents film montage and ultraviolet irradiation process;
Fig. 3 B represents that the montage plate forms operation;
Fig. 3 C represents that raw sheet forms operation; With
Fig. 3 D represents that glass strengthens (glass enhancing) operation.
Below, present invention will be described in detail with reference to the accompanying the soft-touch control of preferred embodiment and the method for its charged layer of manufacturing.
Fig. 2 is a part sectioned view of showing soft-touch control of the present invention.As shown in the figure, there is the inside of the housing 100 of through hole 101 that printed circuit board (PCB) 120 is set, fixes an end of this printed circuit board (PCB) with screw 110 in the one side.
In addition, outer setting glass plate 150 at housing 100, this glass plate is the touch parts of " triggering " function key that will operate, side at glass plate 150 partly forms charged layer 170, charged layer silver coating 171 and pottery 172 also can produce electrification phenomenon 160, electroconductive resin 180 contacts and is fixed thereon with the basal surface of printed circuit board (PCB) 120 by the through hole 101 of housing, and the one side contacts and is fixed thereon with pottery 172, and metal pin 130 inserts in its opposite side.
Dispose microcomputer 140, when the weak current that is produced by the electrification phenomenon of charged layer 170 transmitted by electroconductive resin 180, metal pin 130 and printed circuit board (PCB) 120, this microcomputer was with regard to functional key.
Wherein, can replace glass plate with mica or epoxy resin as ferroelectric material.
On the other hand, describe the manufacture process and the method for the charged layer that produces electrification phenomenon in detail below with reference to Fig. 3 A to Fig. 3 D.
Fig. 3 A to Fig. 3 D is the figure of sequential steps that shows the manufacturing soft-touch control charged layer method of most preferred embodiment of the present invention.Fig. 3 A represents film montage and ultraviolet irradiation process, and Fig. 3 B represents that the montage plate forms operation, and Fig. 3 C represents that raw sheet forms operation, and Fig. 3 D represents that glass strengthens operation.
Method according to manufacturing charged layer of the present invention, as shown in the film montage and ultraviolet irradiation process of Fig. 3 A, coating is bonded in montage film 230 top of emulsion fluid 220 and uses ultraviolet exposure as the emulsion fluid 220 and the drying of coating solution on the surface of being fixed in the net 210 on the aluminium chassis 200.
Film 230 just to have in advance/negative characteristic, is shone emulsion fluid 220 with ultraviolet ray by montage then selectively.
Subsequently, shown in the montage plate formation operation of Fig. 3 B, clean by the stacked structure of ultraviolet exposure, thereby form montage plate 300.
Wherein, emulsion fluid 220 only is retained on the zone of being shone by ultraviolet ray, and is present on the net 210.
Subsequently, shown in the raw sheet formation operation of Fig. 3 C, montage plate 300 is placed on the glass plate 400 potpourri 410 of serigraphy silver powder and ceramic powders.Then, remove montage plate 300, thereby form raw sheet.
When forming raw sheet, shown in Fig. 3 D, carry out the glass that raw sheet is placed in the heating furnace 500 is strengthened operation and is heated 400 ℃ to 600 ℃.
Wherein, in the potpourri 410 of silver powder and ceramic powders, have the silver of larger specific gravity at first to be melted on the surface of glass plate 400, thereby form silver layer 420, then pottery is melted on the silver layer 420, thereby forms ceramic layer 430.Therefore, can prevent silver layer 420 oxidation in air.
In addition, strengthen in the operation at glass, heating-up temperature is set between 400 ℃ and 600 ℃, this is because in the heating-up temperature of reinforcing glass, the technology of the most suitable manufacturing charged layer of the present invention of this temperature range.
Below, explanation has the operation of the soft-touch control of the charged layer of making according to the method described above with reference to Fig. 2.
When the user pointed 20 touch glass plates 150 for the function key of operating electric product or electronic product with it, the weak current that flows by user's body produced electrification phenomenon 160, and this weak current is transmitted to the surface of silver 171.
Wherein, glass plate 150 is similarly operated with the capacitor of circuit unit.The performance of capacitor can be represented by the formula.
[formula 1]
(C: electrostatic capacitance; G: density of medium (conductance); S: the area of silver layer; 1: the thickness of glass plate).
Therefore, being formed on lip-deep silver-colored 171 of glass plate 150 plays an important role in producing electrification phenomenon 160.
The weak current that sends silver 171 to sends electroconductive resin 180 to by pottery 172, and sends microcomputer 140 to by metal pin 130 and printed circuit board (PCB) 120, thus functional key.
As mentioned above, the method that soft-touch control of the present invention and being used to is made its charged layer stops the static that is produced by electric product or user by using glass plate, thereby improves convenience and security, and does not use the control knob of plating, can protect environment.
In addition, partly form charged layer by a side and make the electrification phenomenon maximization at glass plate, thus the function key of operating electric product or electronic product reliably.
Because under the situation that does not break away from spirit of the present invention and essential characteristic, can implement the present invention the same by several forms, it should still be noted that, except as otherwise noted, any details of above-mentioned explanation does not constitute the restriction to the foregoing description, the present invention is based upon in the defined spirit and scope of claims fully, therefore, is defined the equivalent of the regulation that falls into claim and all changes in the scope and improvement or these regulations and scope by appended claim.
Claims (10)
1. a method of making the charged layer of soft-touch control comprises the following steps:
Coating emulsion fluid and dry on the surface of net, montage one film is adhered to this film on the surface of emulsion fluid, uses ultraviolet exposure, forms the montage plate thus;
The montage plate is placed on the surface of dielectric substance, printing constitutes the potpourri of charged layer, removes the montage plate then; With
Heating is printed with the dielectric substance of potpourri, and carries out cooling down operation thereon, forms charged layer.
2. method as claimed in claim 1, wherein, the heating-up temperature of dielectric substance that is formed with charged layer on it is between 400 ℃ to 600 ℃.
3. method as claimed in claim 1, wherein, cooling down operation is the air cooling down operation.
4. method as claimed in claim 1, wherein, dielectric substance is glass or mica or epoxy resin.
5. method as claimed in claim 1, wherein, printed potpourri is made up of silver powder and ceramic powders.
6. soft-touch control device comprises:
Be fixed on the printed circuit board (PCB) in the housing;
Comprise the touch parts of charged layer, the one side partly scribbles charged materials; With
Conductive component is used to connect part and the printed circuit board (PCB) that the touch parts scribble charged layer.
7. device as claimed in claim 6 is characterized in that dielectric substance is a ferroelectric material.
8. device as claimed in claim 6 is characterized in that, dielectric substance is glass plate or mica or epoxy resin.
9. device as claimed in claim 6 is characterized in that conductive component comprises electroconductive resin.
10. device as claimed in claim 6 is characterized in that, charged layer is made of stacked silver layer and the ceramic layer of order.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019980047713A KR100292502B1 (en) | 1998-11-07 | 1998-11-07 | Touch switch and method for fabricating electrified layer therof |
KR47713/1998 | 1998-11-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1255665A true CN1255665A (en) | 2000-06-07 |
CN1175342C CN1175342C (en) | 2004-11-10 |
Family
ID=19557517
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB991224272A Expired - Fee Related CN1175342C (en) | 1998-11-07 | 1999-11-08 | Touching switch and method for mfg. electrified layer |
Country Status (3)
Country | Link |
---|---|
US (1) | US6265682B1 (en) |
KR (1) | KR100292502B1 (en) |
CN (1) | CN1175342C (en) |
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US10007385B2 (en) | 2014-10-24 | 2018-06-26 | Lg Electronics Inc. | Touch sensor assembly and refrigerator door with touch sensor assembly and method for manufacturing the same |
US10055038B2 (en) | 2014-12-24 | 2018-08-21 | Lg Electronics Inc. | Touch sensor assembly and refrigerator door including same |
US10267556B2 (en) | 2014-12-22 | 2019-04-23 | Lg Electronics Inc. | Piezoelectric touch sensor array |
US10330380B2 (en) | 2014-11-07 | 2019-06-25 | Lg Electronics Inc. | Touch sensing apparatus for metal panel including display window with through-holes and touch part home appliance having metal panel and touch sensing apparatus, and method for controlling the same |
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DE10250395A1 (en) * | 2002-10-29 | 2004-05-13 | BSH Bosch und Siemens Hausgeräte GmbH | Capacitive proximity and / or touch sensor and electrically conductive plastic body for such a sensor |
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-
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Also Published As
Publication number | Publication date |
---|---|
KR20000031593A (en) | 2000-06-05 |
CN1175342C (en) | 2004-11-10 |
US6265682B1 (en) | 2001-07-24 |
KR100292502B1 (en) | 2001-07-12 |
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